High Efficiency and Good Beam Quality of Electro-Optic,
Cavity-Dumped and Double-End Pumped Nd:YLF Laser1
X. X. Tanga, b, c, *, Z. W. Fana, c, J. S. Qiua, c, F. Q. Liana, b, c, and X. L. Zhangc
a Academy of Opto-Electronics, Chinese Academy of Sciences, Beijing, 100094 China
b Graduate University of Chinese Academy of Sciences, Beijing, 100049 China
c Beijing GK Laser Technology Co., Ltd., Beijing, 100192 China
*e-mail: lotus0311@163.com
Received December 31, 2011; in final form, January 3, 2012; published online May 11, 2012
Abstract—In this paper, we describe a Nd:YLF laser based on high-speed RTP electro-optical cavity dumping
technique. Two home-made 150 W fiber pump modules are used from both sides to pump Nd:YLF crystal. Cou-
pling systems are the key elements in end-pumped solid-state lasers, the aberrations of which greatly affect the
efficiency of the lasers. In order to get high efficient and good quality laser output, the optical software ZEMAX
is used to design a four-piece coupling system. When the pumped energy is 32 mJ at the repetition rate of 1 Hz,
the output energy is 6.5 mJ with 2.5 ns pulse width. When the pumped energy is 13.1 W at the repetition rate
of 200 Hz, the output energy is 2.2 W with small M2 factor where 
is 1.04, and 
is 1.05, and the light-
light conversion efficiency is up to 16.8%.
10.1134/S1054660X12060126
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